I had the same issue around the same time and ended up calling the office. It turned out to be what Frustr8 said- normal! It's easy to be concerned about those pains when you're otherwise starting to feel normal, but you have to remember that your body has really been put through the ringer and will continue healing for several weeks!
The office told me to use heat, ice, or a combo- whatever felt best for me. I also continued on with my Tylenol early in the morning (stiff from sleeping) and later at night (aching from use during the day).